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2025 Moustache

Xroad FS 4

A 650b aluminum frame commuter e-bike with mid-range components and shimano hydraulic disc brakes.
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Manufacturer Price

€4,399($5,118)
Weight56.4 lbs  
FrameAluminum
SuspensionFull, 100 / 120mm
ForkSuntour XCR Air
Wheels650b Aluminum
Drivetrain1 × 11
GroupsetCUES
MotorBosch 600W 85Nm mid-drive
BatteryBosch 500Wh
BrakesShimano Hydraulic Disc
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

28 mph

Xroad FS 4

31 mph

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Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Compare the full Xroad model range

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Price History
Reviews
Electric Bike Review
Moustache Samedi 27 Xroad 2 Open Review

Nov 2021

Price: $3699.00 | Model Year: 2021, 2022 | A value specced hardtail crossover electric bike that's capable on road, gravel, and light mountain terrain. Sturdy reinforced triple cavity downtube, tubular aluminum alloy fenders, and sleek rear rack hold up well on bumpy terrain and do not produce rattling noise. Integrated lights improve safety and utility, both are viewable from multiple angles.

Observations
  • A value specced hardtail crossover electric bike that's capable on road, gravel, and light mountain terrain. Sturdy reinforced triple cavity downtube, tubular aluminum alloy fenders, and sleek rear rack hold up well on bumpy terrain and do not produce rattling noise. Integrated lights improve safety and utility, both are viewable from multiple angles.

  • High attention to detail with all-black hardware including hubs, spokes, and rims. The rear rack appears to be floating, but is actually connected to the frame with a sturdy metal bar hidden by the rear fender. Bottle cage bosses on the seat tube put fluids within reach, basic flick bell included for signaling. Excellent hydraulic disc brakes with larger front rotor offering increased power and cooling.

  • Streamlined Bosch PowerTube 500 battery pack provides great range, and can be charged on or off the bike. The Performance Line Cruise motor blends power, efficiency, and reduced noise. It offers shift detection, high pedal RPM support, and up to 65 newton meters of torque for capable climbing. Full-coverage plastic chain cover keeps your pants or dress clean.

  • Basic but user friendly Bosch Intuvia display is not compatible with their smartphone app and does not include USB charging. The bike is available in two frame styles and multiple sizes, but only one color at this level. Good drivetrain with nine gears and a wide 11-36 tooth spread, but entry level derailleur and shifters. Plastic battery cover does not lock to the frame, charging port is in the path of the left crank arm, battery locking design is a bit finicky.

Read Review

Geometry
Specs
Build
Frame

Xroad FS, 6061 T4-T6 alloy, w/100mm travel, Bosch PowerTube battery integration (horizontal), 12x148mm, Boost, motor cover w/cooling fins

BB StandardBosch, Press Fit

ColorBlack Glossy

Fork

SR Suntour, XCR 34 Air Boost 2CR LOR, rebound adjustment & lockout function, 120mm travel

Travel120mm

Spring TypeAir

Shock

Moustache, Magic Grip Control 100, specific Air Shock with 2-position platform and dynamic control of rebound, Trunion mount, build-in 165x40mm, 100mm travel

Travel100mm

Bottom Bracket

Bosch, press-fit

Headset

FSA, No 57B

Stem

Moustache, alloy, adjustable, 90mm

Handlebar

Moustache, ergonomique, aluminium, 680mm, backsweep 25°

Saddle

Selle Royal, Essenza + moderate

Seatpost

Moustache, alloy, 31.6mm, 350mm

TypeRigid

Pedals

alloy platform with reflectors

Grips

SB3, Ergonomic

Groupset
Rear Derailleur

Shimano, CUES, RD-U6020-11, 11-speed

Crank

FSA, Narrow-Wide, 38 teeth, chainguard

Shifters

Shimano, CUES, SL-U6000-11R, 11-speed

Cassette

Shimano, CUES, CS-LG400 11-speed, 11-45T

Chain

Shimano, CN-LG500, 120 links

Brakes

Front: Shimano, MT401, hydraulic disc, Rear: Shimano, MT401, hydraulic disc

TypeShimano Hydraulic Disc

Wheels
Rims

Front: Moustache, asymmetric, alloy 6061E, welded, 32 holes, 27.5'', internal width 23mm, Rear: Moustache, asymmetric, alloy 6061E, welded, 32 holes, 27.5'', internal width 23mm

Front Hub

Shimano, 32H, 9x100mm, QR (Quick Release)

Rear Hub

Shimano, 32H, 12x148mm, thru axle

Tires

Front: Schwalbe, Smart Sam, 27.5x2.25, Rear: Schwalbe, Smart Sam, 27.5x2.25

Electric Components
Motor

Bosch, Performance Line CX BDU37, Smart System, 85Nm

Battery

Bosch, PowerTube 500Wh, horizontal, Smart System

Remote

Bosch, Purion 200, Smart System

Charger

Bosch, 2Ah

Accessories
Lights

Front: AXA, NXT, 80 lux, powered by main battery, Rear: Spanninga, Presto2Guard, powered by main battery

Fenders

Moustache, alloy, double wall design, w/alloy stays

Racks

Moustache, alloy, removable QL3 lateral fixation, MIK HD platform

Lock

AXA, Fold Pro 100, 100 cm long folding lock

Bell

Spanninga Minibell Black

Rider Notes
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First added May 3

Last updated June 7